package Exam.String;

public class StringBuilderDemo5 {
    public static void main(String[] args) {
        //拼接字符串
        //int[] arr ={1,2,3};
        //结果：[1,2,3]

        //定义
        int[] arr = {1,2,3};

        //调用方法
        String str = arrToString(arr);
        System.out.println(str);

    }
    public static String arrToString(int[] arr){
        StringBuilder sb = new StringBuilder();
        sb.append("[");
        for (int i = 0; i < arr.length; i++) {
            if(i== arr.length -1){
                sb.append(arr[i]);
            }else {
                sb.append(arr[i]).append(", ");
            }

        }
        sb.append("]");
        return sb.toString();

    }
}
